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Ambiguities in the calculation of dislocation self energies
Author(s) -
LeSar R.
Publication year - 2004
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200302054
Subject(s) - dislocation , cutoff , loop (graph theory) , core (optical fiber) , yield (engineering) , value (mathematics) , energy (signal processing) , expression (computer science) , physics , statistical physics , crystallography , mathematics , condensed matter physics , chemistry , quantum mechanics , thermodynamics , combinatorics , computer science , optics , statistics , programming language
Various forms for the interactions between dislocations have been given in the literature. While arising from the same basic expression, they differ in terms that vanish when integrating over an entire dis‐location loop and thus yield the same value for the interaction energy between distinct dislocations. In this paper, however, we show that when applied to dislocation self energies, which because of a core cutoff do not involve integrations over the entire loop, these expressions may not yield equivalent results. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)